Editing hosts file to block sites not working












6















I put these lines in my C:WindowsSystem32driversetchosts file:



127.0.0.1 www.cnn.com

127.0.0.1 cnn.com

127.0.0.1 facebook.com

127.0.0.1 www.facebook.com

127.0.0.1 www.hotnews.ro

127.0.0.1 hotnews.ro


And I still manage to access these websites.



I restarted my computer, cleared the cache, different browsers, nothing works.



I am not using proxies. I use Windows 7/64 bit.



I flashed my DNS: ipconfig /flushdns and when I ping the cnn.com I get reply from 157.166.226.25



What else can I do? Maybe there are some programs to modify the hosts and would work with them.






windows-7 hosts-file







share|improve this question

























  • What's your OS?

    – gronostaj
    Aug 13 '14 at 20:26











  • @gronostaj Windows 7

    – Claudiu Creanga
    Aug 13 '14 at 20:27











  • When you say etc/hosts, you mean c:windowssystem32driversetchosts, right?

    – aecolley
    Aug 13 '14 at 20:40











  • host file to block sites?

    – Ben Plont
    Aug 13 '14 at 20:43











  • @aecolley yes, it is that file. I think it is something in my configuration. I tried on another laptop and it works fine in blocking those websites with the same file. Could it be because of dual boot?

    – Claudiu Creanga
    Aug 13 '14 at 20:43


















6















I put these lines in my C:WindowsSystem32driversetchosts file:



127.0.0.1 www.cnn.com

127.0.0.1 cnn.com

127.0.0.1 facebook.com

127.0.0.1 www.facebook.com

127.0.0.1 www.hotnews.ro

127.0.0.1 hotnews.ro


And I still manage to access these websites.



I restarted my computer, cleared the cache, different browsers, nothing works.



I am not using proxies. I use Windows 7/64 bit.



I flashed my DNS: ipconfig /flushdns and when I ping the cnn.com I get reply from 157.166.226.25



What else can I do? Maybe there are some programs to modify the hosts and would work with them.






windows-7 hosts-file







share|improve this question

























  • What's your OS?

    – gronostaj
    Aug 13 '14 at 20:26











  • @gronostaj Windows 7

    – Claudiu Creanga
    Aug 13 '14 at 20:27











  • When you say etc/hosts, you mean c:windowssystem32driversetchosts, right?

    – aecolley
    Aug 13 '14 at 20:40











  • host file to block sites?

    – Ben Plont
    Aug 13 '14 at 20:43











  • @aecolley yes, it is that file. I think it is something in my configuration. I tried on another laptop and it works fine in blocking those websites with the same file. Could it be because of dual boot?

    – Claudiu Creanga
    Aug 13 '14 at 20:43
















6












6








6








I put these lines in my C:WindowsSystem32driversetchosts file:



127.0.0.1 www.cnn.com

127.0.0.1 cnn.com

127.0.0.1 facebook.com

127.0.0.1 www.facebook.com

127.0.0.1 www.hotnews.ro

127.0.0.1 hotnews.ro


And I still manage to access these websites.



I restarted my computer, cleared the cache, different browsers, nothing works.



I am not using proxies. I use Windows 7/64 bit.



I flashed my DNS: ipconfig /flushdns and when I ping the cnn.com I get reply from 157.166.226.25



What else can I do? Maybe there are some programs to modify the hosts and would work with them.






windows-7 hosts-file







share|improve this question
















I put these lines in my C:WindowsSystem32driversetchosts file:



127.0.0.1 www.cnn.com

127.0.0.1 cnn.com

127.0.0.1 facebook.com

127.0.0.1 www.facebook.com

127.0.0.1 www.hotnews.ro

127.0.0.1 hotnews.ro


And I still manage to access these websites.



I restarted my computer, cleared the cache, different browsers, nothing works.



I am not using proxies. I use Windows 7/64 bit.



I flashed my DNS: ipconfig /flushdns and when I ping the cnn.com I get reply from 157.166.226.25



What else can I do? Maybe there are some programs to modify the hosts and would work with them.






windows-7 hosts-file




windows-7 hosts-file






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Aug 13 '14 at 21:02







Claudiu Creanga

















asked Aug 13 '14 at 20:21









Claudiu CreangaClaudiu Creanga

1582211




1582211













  • What's your OS?

    – gronostaj
    Aug 13 '14 at 20:26











  • @gronostaj Windows 7

    – Claudiu Creanga
    Aug 13 '14 at 20:27











  • When you say etc/hosts, you mean c:windowssystem32driversetchosts, right?

    – aecolley
    Aug 13 '14 at 20:40











  • host file to block sites?

    – Ben Plont
    Aug 13 '14 at 20:43











  • @aecolley yes, it is that file. I think it is something in my configuration. I tried on another laptop and it works fine in blocking those websites with the same file. Could it be because of dual boot?

    – Claudiu Creanga
    Aug 13 '14 at 20:43





















  • What's your OS?

    – gronostaj
    Aug 13 '14 at 20:26











  • @gronostaj Windows 7

    – Claudiu Creanga
    Aug 13 '14 at 20:27











  • When you say etc/hosts, you mean c:windowssystem32driversetchosts, right?

    – aecolley
    Aug 13 '14 at 20:40











  • host file to block sites?

    – Ben Plont
    Aug 13 '14 at 20:43











  • @aecolley yes, it is that file. I think it is something in my configuration. I tried on another laptop and it works fine in blocking those websites with the same file. Could it be because of dual boot?

    – Claudiu Creanga
    Aug 13 '14 at 20:43



















What's your OS?

– gronostaj
Aug 13 '14 at 20:26





What's your OS?

– gronostaj
Aug 13 '14 at 20:26













@gronostaj Windows 7

– Claudiu Creanga
Aug 13 '14 at 20:27





@gronostaj Windows 7

– Claudiu Creanga
Aug 13 '14 at 20:27













When you say etc/hosts, you mean c:windowssystem32driversetchosts, right?

– aecolley
Aug 13 '14 at 20:40





When you say etc/hosts, you mean c:windowssystem32driversetchosts, right?

– aecolley
Aug 13 '14 at 20:40













host file to block sites?

– Ben Plont
Aug 13 '14 at 20:43





host file to block sites?

– Ben Plont
Aug 13 '14 at 20:43













@aecolley yes, it is that file. I think it is something in my configuration. I tried on another laptop and it works fine in blocking those websites with the same file. Could it be because of dual boot?

– Claudiu Creanga
Aug 13 '14 at 20:43







@aecolley yes, it is that file. I think it is something in my configuration. I tried on another laptop and it works fine in blocking those websites with the same file. Could it be because of dual boot?

– Claudiu Creanga
Aug 13 '14 at 20:43












3 Answers
3






active

oldest

votes


















1














I'm not sure if this will solve your problem, but some suggestions:




  • Remove any extensions you might have on your file.


  • Make sure you have this line somewhere in your file (preferably at top)



    127.0.0.1 localhost




Edit: Should be localhost not localhosts (no 's' at the end)



Edit 2: Here's a pretty complete list of hostfile related info on serverfault. Maybe it'll help: https://serverfault.com/questions/452268/hosts-file-ignored-how-to-troubleshoot






share|improve this answer


























  • What does that line do?

    – gronostaj
    Aug 13 '14 at 20:29











  • Not a 100% clear, but I think it is what creates the loop back to the "local host" page when you try to access facebook or whatever. It's mentioned on several sites, and I think is defaulted in the file, so he probably has it. Wikipedia has some additional info on it.

    – Phillip
    Aug 13 '14 at 20:31








  • 1





    Default file has it commented out with a note: # localhost name resolution is handled within DNS itself., and it's localhost not localhosts, and it doesn't matter because OP isn't trying to resolve localhost.

    – gronostaj
    Aug 13 '14 at 20:33











  • No, I didn't have it. I put it, but does nothing. But it is written #localhost name resolution is handled within DNS itself.

    – Claudiu Creanga
    Aug 13 '14 at 20:33








  • 1





    As I point out. The reason for the downvote is that this foes not solve the authors problem because localhost isn't even a valid domain and having it or not having it doesn't invalidate those entries in the hosts file which the author already attempt and I the question states ( does not work )

    – Ramhound
    Aug 13 '14 at 21:08





















1














possible issues, corruption in file. Editor(notepad) saving it with a .txt extension. Editing the wrong file location. to cover these issues




  • rename current host file


and then use
- notepad %SystemRoot%System32driversetchosts



to make getting correct file
enter one line from your list, save and check folder to make sure did not save it with a .txt
then try it with a ping.






share|improve this answer
























  • I can concur, sometimes you need to run Notepad or Notepad++ as Admin, then only edit Hosts file or else it saves as .TXT file which inturn gets ignored. Way around it, copy hosts file onto desktop edit it, when saving in Notepad choose Save As... then in File Type type choose All filetypes, and specify the name as "hosts" without any extension, then save it, then copy it over back into etc and overwriting it.

    – dExIT
    Nov 17 '16 at 13:01



















1














To block sites you need to list all the domain-names, for sites like facebook and youtube that's a really big list of names and ip-addresses. I'll copy the code that I used for blocking youtube beneath.



Subdomain   IP Address

127.0.0.1   host.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   host.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   mx.youtube.com  

127.0.0.1   216.58.192.206

127.0.0.1   mx.youtube.com  

127.0.0.1   216.58.192.238

127.0.0.1   mx.youtube.com  

127.0.0.1   172.217.0.14

127.0.0.1   mx.youtube.com  

127.0.0.1   172.217.6.14

127.0.0.1   mx.youtube.com  

127.0.0.1   172.217.9.46

127.0.0.1   mx.youtube.com  

127.0.0.1   216.58.192.174

127.0.0.1   172.217.6.110   

127.0.0.1   172.217.4.46

127.0.0.1   172.217.1.46    

127.0.0.1   172.217.8.174

127.0.0.1   172.217.8.206

127.0.0.1   216.58.192.142

127.0.0.1   216.58.216.78

127.0.0.1   172.217.4.78

127.0.0.1   216.58.216.238

127.0.0.1   74.125.126.129

127.0.0.1   198.105.244.63

127.0.0.1   198.105.254.63

127.0.0.1   198.105.244.63

127.0.0.1   198.105.254.63

127.0.0.1   mx.youtube.com  

127.0.0.1   2607:f8b0:4009:803:0:0:0:200e

127.0.0.1   admin.youtube.com   

127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81

127.0.0.1   http.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   http.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   mx0.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   mx0.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   administration.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   administration.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   development.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   development.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   svn.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   svn.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   id.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   id.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   mx1.youtube.com 

127.0.0.1   198.105.244.63  

127.0.0.1   mx1.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   ads.youtube.com 

127.0.0.1   172.217.8.174

127.0.0.1   devsql.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   devsql.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   syslog.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   syslog.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   ads.youtube.com 

127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66

127.0.0.1   adserver.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   adserver.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   images.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   images.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   mysql.youtube.com   

127.0.0.1   198.105.244.63

127.0.0.1   mysql.youtube.com   

127.0.0.1   198.105.254.63

127.0.0.1   devtest.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   devtest.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   info.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   info.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.9.46

127.0.0.1   news.youtube.com    

127.0.0.1   216.58.192.174

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.6.110

127.0.0.1   news.youtube.com

127.0.0.1   172.217.4.46

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.1.46

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.8.174

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.8.206

127.0.0.1   news.youtube.com    

127.0.0.1   216.58.192.142

127.0.0.1   news.youtube.com    

127.0.0.1   216.58.216.78

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.4.78

127.0.0.1   news.youtube.com    

127.0.0.1   216.58.216.238

127.0.0.1   news.youtube.com    

127.0.0.1   216.58.192.206

127.0.0.1   news.youtube.com    

127.0.0.1   216.58.192.238

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.0.14

127.0.0.1   news.youtube.com    

127.0.0.1   172.217.6.14

127.0.0.1   alerts.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   alerts.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   dhcp.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   dhcp.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   test1.youtube.com   

127.0.0.1   198.105.244.63

127.0.0.1   test1.youtube.com   

127.0.0.1   198.105.254.63

127.0.0.1   news.youtube.com    

127.0.0.1   2607:f8b0:4009:803:0:0:0:200e

127.0.0.1   internal.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   internal.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   noc.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   noc.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   alpha.youtube.com   

127.0.0.1   198.105.244.63

127.0.0.1   alpha.youtube.com   

127.0.0.1   198.105.254.63

127.0.0.1   direct.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   direct.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   test2.youtube.com   

127.0.0.1   198.105.244.63  

127.0.0.1   test2.youtube.com   

127.0.0.1   198.105.254.63

127.0.0.1   internet.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   internet.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   ns.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   ns.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   ap.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   ap.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   dmz.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   dmz.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   testing.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   testing.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   intra.youtube.com   

127.0.0.1   198.105.244.63

127.0.0.1   intra.youtube.com   

127.0.0.1   198.105.254.63

127.0.0.1   ns0.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   ns0.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   apache.youtube.com  

127.0.0.1   198.105.244.63

127.0.0.1   apache.youtube.com  

127.0.0.1   198.105.254.63

127.0.0.1   dns.youtube.com 

127.0.0.1   198.105.244.63

127.0.0.1   dns.youtube.com 

127.0.0.1   198.105.254.63

127.0.0.1   upload.youtube.com  

127.0.0.1   172.217.8.175

127.0.0.1   upload.youtube.com

127.0.0.1   2607:f8b0:4009:803:0:0:0:200f

127.0.0.1   intranet.youtube.com    

127.0.0.1   198.105.244.63

127.0.0.1   intranet.youtube.com    

127.0.0.1   198.105.254.63

127.0.0.1   ns1.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ns1.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   app.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   app.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   dns0.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   dns0.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   vm.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   vm.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   ipv6.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ipv6.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   ns2.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ns2.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   apps.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   apps.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   dns1.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   dns1.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   vnc.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   vnc.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   lab.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   lab.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   ns3.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ns3.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   appserver.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   appserver.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   dns2.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   dns2.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   ldap.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ldap.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   aptest.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   aptest.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   download.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   download.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   vpn.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   vpn.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   linux.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   linux.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   ops.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ops.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   auth.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   auth.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   en.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   en.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   web.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   web.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   local.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   local.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   oracle.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   oracle.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   backup.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   backup.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   erp.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   erp.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   web2test.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   web2test.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   log.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   log.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   owa.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   owa.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   beta.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   beta.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   eshop.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   eshop.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   whois.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   whois.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   pbx.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   pbx.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   blog.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   blog.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   exchange.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   exchange.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   wiki.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   wiki.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   www.youtube.com

127.0.0.1   172.217.8.174

127.0.0.1   www.youtube.com

127.0.0.1   172.217.8.206

127.0.0.1   www.youtube.com

127.0.0.1   216.58.192.142

127.0.0.1   www.youtube.com

127.0.0.1   216.58.216.78

127.0.0.1   www.youtube.com

127.0.0.1   172.217.4.78

127.0.0.1   www.youtube.com

127.0.0.1   216.58.216.238

127.0.0.1   www.youtube.com

127.0.0.1   216.58.192.206

127.0.0.1   www.youtube.com

127.0.0.1   216.58.192.238

127.0.0.1   www.youtube.com

127.0.0.1   172.217.0.14

127.0.0.1   www.youtube.com

127.0.0.1   172.217.6.14

127.0.0.1   www.youtube.com

127.0.0.1   172.217.9.46

127.0.0.1   www.youtube.com

127.0.0.1   216.58.192.174

127.0.0.1   www.youtube.com

127.0.0.1   172.217.6.110

127.0.0.1   www.youtube.com

127.0.0.1   172.217.4.46

127.0.0.1   www.youtube.com

127.0.0.1   172.217.1.46

127.0.0.1   s3.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   s3.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   f5.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   f5.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   www.youtube.com

127.0.0.1   2607:f8b0:4009:803:0:0:0:200e

127.0.0.1   secure.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   secure.youtube.com

127.0.0.1   198.105.254.63

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127.0.0.1   198.105.244.63

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127.0.0.1   198.105.254.63

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127.0.0.1   198.105.244.63

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127.0.0.1   198.105.254.63

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127.0.0.1   198.105.244.63

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127.0.0.1   198.105.254.63

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127.0.0.1   198.105.244.63

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127.0.0.1   198.105.254.63

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127.0.0.1   198.105.244.63

127.0.0.1   citrix.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   firewall.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   firewall.youtube.com

127.0.0.1   198.105.254.63

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127.0.0.1   198.105.244.63

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127.0.0.1   198.105.254.63

127.0.0.1   main.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   main.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   shop.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   shop.youtube.com

127.0.0.1   198.105.254.63

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127.0.0.1   198.105.244.63

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127.0.0.1   198.105.254.63

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127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66

127.0.0.1   manage.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   manage.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   sip.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   sip.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   corp.youtube.com

127.0.0.1   74.125.126.129

127.0.0.1   corp.youtube.com

127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81

127.0.0.1   mgmt.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   mgmt.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   crs.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   crs.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   mirror.youtube.com

127.0.0.1   198.105.244.63

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127.0.0.1   198.105.254.63

127.0.0.1   sql.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   sql.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   cvs.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   cvs.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   git.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   git.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   mobile.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   mobile.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   squid.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   squid.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   database.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   database.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   gw.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   gw.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   help.youtube.com

127.0.0.1   172.217.12.100

127.0.0.1   monitor.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   monitor.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   ssh.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ssh.youtube.com     

127.0.0.1   198.105.254.63

127.0.0.1   db.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   db.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   help.youtube.com

127.0.0.1   2607:f8b0:4002:811:0:0:0:2004

127.0.0.1   mssql.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   mssql.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   ssl.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   ssl.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   demo.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   demo.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   helpdesk.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   helpdesk.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   mta.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   mta.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   dev.youtube.com

127.0.0.1   198.105.244.63

127.0.0.1   dev.youtube.com

127.0.0.1   198.105.254.63

127.0.0.1   home.youtube.com

127.0.0.1   198.105.244.63





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    3 Answers
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    3






    active

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    active

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    1














    I'm not sure if this will solve your problem, but some suggestions:




    • Remove any extensions you might have on your file.


    • Make sure you have this line somewhere in your file (preferably at top)



      127.0.0.1 localhost




    Edit: Should be localhost not localhosts (no 's' at the end)



    Edit 2: Here's a pretty complete list of hostfile related info on serverfault. Maybe it'll help: https://serverfault.com/questions/452268/hosts-file-ignored-how-to-troubleshoot






    share|improve this answer


























    • What does that line do?

      – gronostaj
      Aug 13 '14 at 20:29











    • Not a 100% clear, but I think it is what creates the loop back to the "local host" page when you try to access facebook or whatever. It's mentioned on several sites, and I think is defaulted in the file, so he probably has it. Wikipedia has some additional info on it.

      – Phillip
      Aug 13 '14 at 20:31








    • 1





      Default file has it commented out with a note: # localhost name resolution is handled within DNS itself., and it's localhost not localhosts, and it doesn't matter because OP isn't trying to resolve localhost.

      – gronostaj
      Aug 13 '14 at 20:33











    • No, I didn't have it. I put it, but does nothing. But it is written #localhost name resolution is handled within DNS itself.

      – Claudiu Creanga
      Aug 13 '14 at 20:33








    • 1





      As I point out. The reason for the downvote is that this foes not solve the authors problem because localhost isn't even a valid domain and having it or not having it doesn't invalidate those entries in the hosts file which the author already attempt and I the question states ( does not work )

      – Ramhound
      Aug 13 '14 at 21:08


















    1














    I'm not sure if this will solve your problem, but some suggestions:




    • Remove any extensions you might have on your file.


    • Make sure you have this line somewhere in your file (preferably at top)



      127.0.0.1 localhost




    Edit: Should be localhost not localhosts (no 's' at the end)



    Edit 2: Here's a pretty complete list of hostfile related info on serverfault. Maybe it'll help: https://serverfault.com/questions/452268/hosts-file-ignored-how-to-troubleshoot






    share|improve this answer


























    • What does that line do?

      – gronostaj
      Aug 13 '14 at 20:29











    • Not a 100% clear, but I think it is what creates the loop back to the "local host" page when you try to access facebook or whatever. It's mentioned on several sites, and I think is defaulted in the file, so he probably has it. Wikipedia has some additional info on it.

      – Phillip
      Aug 13 '14 at 20:31








    • 1





      Default file has it commented out with a note: # localhost name resolution is handled within DNS itself., and it's localhost not localhosts, and it doesn't matter because OP isn't trying to resolve localhost.

      – gronostaj
      Aug 13 '14 at 20:33











    • No, I didn't have it. I put it, but does nothing. But it is written #localhost name resolution is handled within DNS itself.

      – Claudiu Creanga
      Aug 13 '14 at 20:33








    • 1





      As I point out. The reason for the downvote is that this foes not solve the authors problem because localhost isn't even a valid domain and having it or not having it doesn't invalidate those entries in the hosts file which the author already attempt and I the question states ( does not work )

      – Ramhound
      Aug 13 '14 at 21:08
















    1












    1








    1







    I'm not sure if this will solve your problem, but some suggestions:




    • Remove any extensions you might have on your file.


    • Make sure you have this line somewhere in your file (preferably at top)



      127.0.0.1 localhost




    Edit: Should be localhost not localhosts (no 's' at the end)



    Edit 2: Here's a pretty complete list of hostfile related info on serverfault. Maybe it'll help: https://serverfault.com/questions/452268/hosts-file-ignored-how-to-troubleshoot






    share|improve this answer















    I'm not sure if this will solve your problem, but some suggestions:




    • Remove any extensions you might have on your file.


    • Make sure you have this line somewhere in your file (preferably at top)



      127.0.0.1 localhost




    Edit: Should be localhost not localhosts (no 's' at the end)



    Edit 2: Here's a pretty complete list of hostfile related info on serverfault. Maybe it'll help: https://serverfault.com/questions/452268/hosts-file-ignored-how-to-troubleshoot







    share|improve this answer














    share|improve this answer



    share|improve this answer








    edited Apr 13 '17 at 12:14









    Community♦

    1




    1










    answered Aug 13 '14 at 20:29









    PhillipPhillip

    23414




    23414













    • What does that line do?

      – gronostaj
      Aug 13 '14 at 20:29











    • Not a 100% clear, but I think it is what creates the loop back to the "local host" page when you try to access facebook or whatever. It's mentioned on several sites, and I think is defaulted in the file, so he probably has it. Wikipedia has some additional info on it.

      – Phillip
      Aug 13 '14 at 20:31








    • 1





      Default file has it commented out with a note: # localhost name resolution is handled within DNS itself., and it's localhost not localhosts, and it doesn't matter because OP isn't trying to resolve localhost.

      – gronostaj
      Aug 13 '14 at 20:33











    • No, I didn't have it. I put it, but does nothing. But it is written #localhost name resolution is handled within DNS itself.

      – Claudiu Creanga
      Aug 13 '14 at 20:33








    • 1





      As I point out. The reason for the downvote is that this foes not solve the authors problem because localhost isn't even a valid domain and having it or not having it doesn't invalidate those entries in the hosts file which the author already attempt and I the question states ( does not work )

      – Ramhound
      Aug 13 '14 at 21:08





















    • What does that line do?

      – gronostaj
      Aug 13 '14 at 20:29











    • Not a 100% clear, but I think it is what creates the loop back to the "local host" page when you try to access facebook or whatever. It's mentioned on several sites, and I think is defaulted in the file, so he probably has it. Wikipedia has some additional info on it.

      – Phillip
      Aug 13 '14 at 20:31








    • 1





      Default file has it commented out with a note: # localhost name resolution is handled within DNS itself., and it's localhost not localhosts, and it doesn't matter because OP isn't trying to resolve localhost.

      – gronostaj
      Aug 13 '14 at 20:33











    • No, I didn't have it. I put it, but does nothing. But it is written #localhost name resolution is handled within DNS itself.

      – Claudiu Creanga
      Aug 13 '14 at 20:33








    • 1





      As I point out. The reason for the downvote is that this foes not solve the authors problem because localhost isn't even a valid domain and having it or not having it doesn't invalidate those entries in the hosts file which the author already attempt and I the question states ( does not work )

      – Ramhound
      Aug 13 '14 at 21:08



















    What does that line do?

    – gronostaj
    Aug 13 '14 at 20:29





    What does that line do?

    – gronostaj
    Aug 13 '14 at 20:29













    Not a 100% clear, but I think it is what creates the loop back to the "local host" page when you try to access facebook or whatever. It's mentioned on several sites, and I think is defaulted in the file, so he probably has it. Wikipedia has some additional info on it.

    – Phillip
    Aug 13 '14 at 20:31







    Not a 100% clear, but I think it is what creates the loop back to the "local host" page when you try to access facebook or whatever. It's mentioned on several sites, and I think is defaulted in the file, so he probably has it. Wikipedia has some additional info on it.

    – Phillip
    Aug 13 '14 at 20:31






    1




    1





    Default file has it commented out with a note: # localhost name resolution is handled within DNS itself., and it's localhost not localhosts, and it doesn't matter because OP isn't trying to resolve localhost.

    – gronostaj
    Aug 13 '14 at 20:33





    Default file has it commented out with a note: # localhost name resolution is handled within DNS itself., and it's localhost not localhosts, and it doesn't matter because OP isn't trying to resolve localhost.

    – gronostaj
    Aug 13 '14 at 20:33













    No, I didn't have it. I put it, but does nothing. But it is written #localhost name resolution is handled within DNS itself.

    – Claudiu Creanga
    Aug 13 '14 at 20:33







    No, I didn't have it. I put it, but does nothing. But it is written #localhost name resolution is handled within DNS itself.

    – Claudiu Creanga
    Aug 13 '14 at 20:33






    1




    1





    As I point out. The reason for the downvote is that this foes not solve the authors problem because localhost isn't even a valid domain and having it or not having it doesn't invalidate those entries in the hosts file which the author already attempt and I the question states ( does not work )

    – Ramhound
    Aug 13 '14 at 21:08







    As I point out. The reason for the downvote is that this foes not solve the authors problem because localhost isn't even a valid domain and having it or not having it doesn't invalidate those entries in the hosts file which the author already attempt and I the question states ( does not work )

    – Ramhound
    Aug 13 '14 at 21:08















    1














    possible issues, corruption in file. Editor(notepad) saving it with a .txt extension. Editing the wrong file location. to cover these issues




    • rename current host file


    and then use
    - notepad %SystemRoot%System32driversetchosts



    to make getting correct file
    enter one line from your list, save and check folder to make sure did not save it with a .txt
    then try it with a ping.






    share|improve this answer
























    • I can concur, sometimes you need to run Notepad or Notepad++ as Admin, then only edit Hosts file or else it saves as .TXT file which inturn gets ignored. Way around it, copy hosts file onto desktop edit it, when saving in Notepad choose Save As... then in File Type type choose All filetypes, and specify the name as "hosts" without any extension, then save it, then copy it over back into etc and overwriting it.

      – dExIT
      Nov 17 '16 at 13:01
















    1














    possible issues, corruption in file. Editor(notepad) saving it with a .txt extension. Editing the wrong file location. to cover these issues




    • rename current host file


    and then use
    - notepad %SystemRoot%System32driversetchosts



    to make getting correct file
    enter one line from your list, save and check folder to make sure did not save it with a .txt
    then try it with a ping.






    share|improve this answer
























    • I can concur, sometimes you need to run Notepad or Notepad++ as Admin, then only edit Hosts file or else it saves as .TXT file which inturn gets ignored. Way around it, copy hosts file onto desktop edit it, when saving in Notepad choose Save As... then in File Type type choose All filetypes, and specify the name as "hosts" without any extension, then save it, then copy it over back into etc and overwriting it.

      – dExIT
      Nov 17 '16 at 13:01














    1












    1








    1







    possible issues, corruption in file. Editor(notepad) saving it with a .txt extension. Editing the wrong file location. to cover these issues




    • rename current host file


    and then use
    - notepad %SystemRoot%System32driversetchosts



    to make getting correct file
    enter one line from your list, save and check folder to make sure did not save it with a .txt
    then try it with a ping.






    share|improve this answer













    possible issues, corruption in file. Editor(notepad) saving it with a .txt extension. Editing the wrong file location. to cover these issues




    • rename current host file


    and then use
    - notepad %SystemRoot%System32driversetchosts



    to make getting correct file
    enter one line from your list, save and check folder to make sure did not save it with a .txt
    then try it with a ping.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Sep 12 '16 at 14:29









    bvaughnbvaughn

    73349




    73349













    • I can concur, sometimes you need to run Notepad or Notepad++ as Admin, then only edit Hosts file or else it saves as .TXT file which inturn gets ignored. Way around it, copy hosts file onto desktop edit it, when saving in Notepad choose Save As... then in File Type type choose All filetypes, and specify the name as "hosts" without any extension, then save it, then copy it over back into etc and overwriting it.

      – dExIT
      Nov 17 '16 at 13:01



















    • I can concur, sometimes you need to run Notepad or Notepad++ as Admin, then only edit Hosts file or else it saves as .TXT file which inturn gets ignored. Way around it, copy hosts file onto desktop edit it, when saving in Notepad choose Save As... then in File Type type choose All filetypes, and specify the name as "hosts" without any extension, then save it, then copy it over back into etc and overwriting it.

      – dExIT
      Nov 17 '16 at 13:01

















    I can concur, sometimes you need to run Notepad or Notepad++ as Admin, then only edit Hosts file or else it saves as .TXT file which inturn gets ignored. Way around it, copy hosts file onto desktop edit it, when saving in Notepad choose Save As... then in File Type type choose All filetypes, and specify the name as "hosts" without any extension, then save it, then copy it over back into etc and overwriting it.

    – dExIT
    Nov 17 '16 at 13:01





    I can concur, sometimes you need to run Notepad or Notepad++ as Admin, then only edit Hosts file or else it saves as .TXT file which inturn gets ignored. Way around it, copy hosts file onto desktop edit it, when saving in Notepad choose Save As... then in File Type type choose All filetypes, and specify the name as "hosts" without any extension, then save it, then copy it over back into etc and overwriting it.

    – dExIT
    Nov 17 '16 at 13:01











    1














    To block sites you need to list all the domain-names, for sites like facebook and youtube that's a really big list of names and ip-addresses. I'll copy the code that I used for blocking youtube beneath.



    Subdomain   IP Address
    
127.0.0.1   host.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   host.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mx.youtube.com  
    
127.0.0.1   216.58.192.206
    
127.0.0.1   mx.youtube.com  
    
127.0.0.1   216.58.192.238
    
127.0.0.1   mx.youtube.com  
    
127.0.0.1   172.217.0.14
    
127.0.0.1   mx.youtube.com  
    
127.0.0.1   172.217.6.14
    
127.0.0.1   mx.youtube.com  
    
127.0.0.1   172.217.9.46
    
127.0.0.1   mx.youtube.com  
    
127.0.0.1   216.58.192.174
    
127.0.0.1   172.217.6.110   
    
127.0.0.1   172.217.4.46
    
127.0.0.1   172.217.1.46    
    
127.0.0.1   172.217.8.174
    
127.0.0.1   172.217.8.206
    
127.0.0.1   216.58.192.142
    
127.0.0.1   216.58.216.78
    
127.0.0.1   172.217.4.78
    
127.0.0.1   216.58.216.238
    
127.0.0.1   74.125.126.129
    
127.0.0.1   198.105.244.63
    
127.0.0.1   198.105.254.63
    
127.0.0.1   198.105.244.63
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mx.youtube.com  
    
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
    
127.0.0.1   admin.youtube.com   
    
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
    
127.0.0.1   http.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   http.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mx0.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   mx0.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   administration.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   administration.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   development.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   development.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   svn.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   svn.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   id.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   id.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mx1.youtube.com 
    
127.0.0.1   198.105.244.63  
    
127.0.0.1   mx1.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ads.youtube.com 
    
127.0.0.1   172.217.8.174
    
127.0.0.1   devsql.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   devsql.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   syslog.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   syslog.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ads.youtube.com 
    
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
    
127.0.0.1   adserver.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   adserver.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   images.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   images.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mysql.youtube.com   
    
127.0.0.1   198.105.244.63
    
127.0.0.1   mysql.youtube.com   
    
127.0.0.1   198.105.254.63
    
127.0.0.1   devtest.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   devtest.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   info.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   info.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.9.46
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   216.58.192.174
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.6.110
    
127.0.0.1   news.youtube.com
    
127.0.0.1   172.217.4.46
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.1.46
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.8.174
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.8.206
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   216.58.192.142
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   216.58.216.78
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.4.78
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   216.58.216.238
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   216.58.192.206
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   216.58.192.238
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.0.14
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   172.217.6.14
    
127.0.0.1   alerts.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   alerts.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   dhcp.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   dhcp.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   test1.youtube.com   
    
127.0.0.1   198.105.244.63
    
127.0.0.1   test1.youtube.com   
    
127.0.0.1   198.105.254.63
    
127.0.0.1   news.youtube.com    
    
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
    
127.0.0.1   internal.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   internal.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   noc.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   noc.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   alpha.youtube.com   
    
127.0.0.1   198.105.244.63
    
127.0.0.1   alpha.youtube.com   
    
127.0.0.1   198.105.254.63
    
127.0.0.1   direct.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   direct.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   test2.youtube.com   
    
127.0.0.1   198.105.244.63  
    
127.0.0.1   test2.youtube.com   
    
127.0.0.1   198.105.254.63
    
127.0.0.1   internet.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   internet.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ns.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ns.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ap.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ap.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   dmz.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   dmz.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   testing.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   testing.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   intra.youtube.com   
    
127.0.0.1   198.105.244.63
    
127.0.0.1   intra.youtube.com   
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ns0.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ns0.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   apache.youtube.com  
    
127.0.0.1   198.105.244.63
    
127.0.0.1   apache.youtube.com  
    
127.0.0.1   198.105.254.63
    
127.0.0.1   dns.youtube.com 
    
127.0.0.1   198.105.244.63
    
127.0.0.1   dns.youtube.com 
    
127.0.0.1   198.105.254.63
    
127.0.0.1   upload.youtube.com  
    
127.0.0.1   172.217.8.175
    
127.0.0.1   upload.youtube.com
    
127.0.0.1   2607:f8b0:4009:803:0:0:0:200f
    
127.0.0.1   intranet.youtube.com    
    
127.0.0.1   198.105.244.63
    
127.0.0.1   intranet.youtube.com    
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ns1.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ns1.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   app.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   app.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   dns0.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   dns0.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   vm.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   vm.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ipv6.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ipv6.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ns2.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ns2.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   apps.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   apps.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   dns1.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   dns1.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   vnc.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   vnc.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   lab.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   lab.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ns3.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ns3.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   appserver.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   appserver.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   dns2.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   dns2.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ldap.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ldap.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   aptest.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   aptest.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   download.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   download.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   vpn.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   vpn.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   linux.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   linux.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ops.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ops.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   auth.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   auth.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   en.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   en.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   web.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   web.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   local.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   local.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   oracle.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   oracle.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   backup.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   backup.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   erp.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   erp.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   web2test.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   web2test.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   log.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   log.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   owa.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   owa.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   beta.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   beta.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   eshop.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   eshop.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   whois.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   whois.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   pbx.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   pbx.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   blog.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   blog.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   exchange.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   exchange.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   wiki.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   wiki.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.8.174
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.8.206
    
127.0.0.1   www.youtube.com
    
127.0.0.1   216.58.192.142
    
127.0.0.1   www.youtube.com
    
127.0.0.1   216.58.216.78
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.4.78
    
127.0.0.1   www.youtube.com
    
127.0.0.1   216.58.216.238
    
127.0.0.1   www.youtube.com
    
127.0.0.1   216.58.192.206
    
127.0.0.1   www.youtube.com
    
127.0.0.1   216.58.192.238
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.0.14
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.6.14
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.9.46
    
127.0.0.1   www.youtube.com
    
127.0.0.1   216.58.192.174
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.6.110
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.4.46
    
127.0.0.1   www.youtube.com
    
127.0.0.1   172.217.1.46
    
127.0.0.1   s3.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   s3.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   f5.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   f5.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   www.youtube.com
    
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
    
127.0.0.1   secure.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   secure.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   chat.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   chat.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   fileserver.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   fileserver.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   www2.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   www2.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   server.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   server.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   citrix.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   citrix.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   firewall.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   firewall.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   xml.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   xml.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   main.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   main.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   shop.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   shop.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   cms.youtube.com
    
127.0.0.1   172.217.8.174
    
127.0.0.1   forum.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   forum.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   cms.youtube.com
    
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
    
127.0.0.1   manage.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   manage.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   sip.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   sip.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   corp.youtube.com
    
127.0.0.1   74.125.126.129
    
127.0.0.1   corp.youtube.com
    
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
    
127.0.0.1   mgmt.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   mgmt.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   crs.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   crs.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mirror.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   mirror.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   sql.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   sql.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   cvs.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   cvs.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   git.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   git.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mobile.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   mobile.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   squid.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   squid.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   database.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   database.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   gw.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   gw.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   help.youtube.com
    
127.0.0.1   172.217.12.100
    
127.0.0.1   monitor.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   monitor.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ssh.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ssh.youtube.com     
    
127.0.0.1   198.105.254.63
    
127.0.0.1   db.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   db.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   help.youtube.com
    
127.0.0.1   2607:f8b0:4002:811:0:0:0:2004
    
127.0.0.1   mssql.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   mssql.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   ssl.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   ssl.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   demo.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   demo.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   helpdesk.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   helpdesk.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   mta.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   mta.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   dev.youtube.com
    
127.0.0.1   198.105.244.63
    
127.0.0.1   dev.youtube.com
    
127.0.0.1   198.105.254.63
    
127.0.0.1   home.youtube.com
    
127.0.0.1   198.105.244.63





    share|improve this answer




























      1














      To block sites you need to list all the domain-names, for sites like facebook and youtube that's a really big list of names and ip-addresses. I'll copy the code that I used for blocking youtube beneath.



      Subdomain   IP Address
      
127.0.0.1   host.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   host.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mx.youtube.com  
      
127.0.0.1   216.58.192.206
      
127.0.0.1   mx.youtube.com  
      
127.0.0.1   216.58.192.238
      
127.0.0.1   mx.youtube.com  
      
127.0.0.1   172.217.0.14
      
127.0.0.1   mx.youtube.com  
      
127.0.0.1   172.217.6.14
      
127.0.0.1   mx.youtube.com  
      
127.0.0.1   172.217.9.46
      
127.0.0.1   mx.youtube.com  
      
127.0.0.1   216.58.192.174
      
127.0.0.1   172.217.6.110   
      
127.0.0.1   172.217.4.46
      
127.0.0.1   172.217.1.46    
      
127.0.0.1   172.217.8.174
      
127.0.0.1   172.217.8.206
      
127.0.0.1   216.58.192.142
      
127.0.0.1   216.58.216.78
      
127.0.0.1   172.217.4.78
      
127.0.0.1   216.58.216.238
      
127.0.0.1   74.125.126.129
      
127.0.0.1   198.105.244.63
      
127.0.0.1   198.105.254.63
      
127.0.0.1   198.105.244.63
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mx.youtube.com  
      
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
      
127.0.0.1   admin.youtube.com   
      
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
      
127.0.0.1   http.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   http.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mx0.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   mx0.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   administration.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   administration.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   development.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   development.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   svn.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   svn.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   id.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   id.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mx1.youtube.com 
      
127.0.0.1   198.105.244.63  
      
127.0.0.1   mx1.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ads.youtube.com 
      
127.0.0.1   172.217.8.174
      
127.0.0.1   devsql.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   devsql.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   syslog.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   syslog.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ads.youtube.com 
      
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
      
127.0.0.1   adserver.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   adserver.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   images.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   images.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mysql.youtube.com   
      
127.0.0.1   198.105.244.63
      
127.0.0.1   mysql.youtube.com   
      
127.0.0.1   198.105.254.63
      
127.0.0.1   devtest.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   devtest.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   info.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   info.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.9.46
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   216.58.192.174
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.6.110
      
127.0.0.1   news.youtube.com
      
127.0.0.1   172.217.4.46
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.1.46
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.8.174
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.8.206
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   216.58.192.142
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   216.58.216.78
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.4.78
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   216.58.216.238
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   216.58.192.206
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   216.58.192.238
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.0.14
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   172.217.6.14
      
127.0.0.1   alerts.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   alerts.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   dhcp.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   dhcp.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   test1.youtube.com   
      
127.0.0.1   198.105.244.63
      
127.0.0.1   test1.youtube.com   
      
127.0.0.1   198.105.254.63
      
127.0.0.1   news.youtube.com    
      
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
      
127.0.0.1   internal.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   internal.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   noc.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   noc.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   alpha.youtube.com   
      
127.0.0.1   198.105.244.63
      
127.0.0.1   alpha.youtube.com   
      
127.0.0.1   198.105.254.63
      
127.0.0.1   direct.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   direct.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   test2.youtube.com   
      
127.0.0.1   198.105.244.63  
      
127.0.0.1   test2.youtube.com   
      
127.0.0.1   198.105.254.63
      
127.0.0.1   internet.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   internet.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ns.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ns.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ap.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ap.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   dmz.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   dmz.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   testing.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   testing.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   intra.youtube.com   
      
127.0.0.1   198.105.244.63
      
127.0.0.1   intra.youtube.com   
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ns0.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ns0.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   apache.youtube.com  
      
127.0.0.1   198.105.244.63
      
127.0.0.1   apache.youtube.com  
      
127.0.0.1   198.105.254.63
      
127.0.0.1   dns.youtube.com 
      
127.0.0.1   198.105.244.63
      
127.0.0.1   dns.youtube.com 
      
127.0.0.1   198.105.254.63
      
127.0.0.1   upload.youtube.com  
      
127.0.0.1   172.217.8.175
      
127.0.0.1   upload.youtube.com
      
127.0.0.1   2607:f8b0:4009:803:0:0:0:200f
      
127.0.0.1   intranet.youtube.com    
      
127.0.0.1   198.105.244.63
      
127.0.0.1   intranet.youtube.com    
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ns1.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ns1.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   app.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   app.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   dns0.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   dns0.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   vm.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   vm.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ipv6.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ipv6.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ns2.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ns2.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   apps.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   apps.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   dns1.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   dns1.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   vnc.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   vnc.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   lab.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   lab.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ns3.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ns3.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   appserver.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   appserver.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   dns2.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   dns2.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ldap.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ldap.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   aptest.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   aptest.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   download.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   download.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   vpn.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   vpn.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   linux.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   linux.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ops.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ops.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   auth.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   auth.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   en.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   en.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   web.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   web.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   local.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   local.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   oracle.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   oracle.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   backup.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   backup.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   erp.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   erp.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   web2test.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   web2test.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   log.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   log.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   owa.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   owa.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   beta.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   beta.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   eshop.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   eshop.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   whois.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   whois.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   pbx.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   pbx.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   blog.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   blog.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   exchange.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   exchange.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   wiki.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   wiki.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.8.174
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.8.206
      
127.0.0.1   www.youtube.com
      
127.0.0.1   216.58.192.142
      
127.0.0.1   www.youtube.com
      
127.0.0.1   216.58.216.78
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.4.78
      
127.0.0.1   www.youtube.com
      
127.0.0.1   216.58.216.238
      
127.0.0.1   www.youtube.com
      
127.0.0.1   216.58.192.206
      
127.0.0.1   www.youtube.com
      
127.0.0.1   216.58.192.238
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.0.14
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.6.14
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.9.46
      
127.0.0.1   www.youtube.com
      
127.0.0.1   216.58.192.174
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.6.110
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.4.46
      
127.0.0.1   www.youtube.com
      
127.0.0.1   172.217.1.46
      
127.0.0.1   s3.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   s3.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   f5.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   f5.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   www.youtube.com
      
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
      
127.0.0.1   secure.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   secure.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   chat.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   chat.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   fileserver.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   fileserver.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   www2.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   www2.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   server.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   server.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   citrix.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   citrix.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   firewall.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   firewall.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   xml.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   xml.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   main.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   main.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   shop.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   shop.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   cms.youtube.com
      
127.0.0.1   172.217.8.174
      
127.0.0.1   forum.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   forum.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   cms.youtube.com
      
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
      
127.0.0.1   manage.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   manage.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   sip.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   sip.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   corp.youtube.com
      
127.0.0.1   74.125.126.129
      
127.0.0.1   corp.youtube.com
      
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
      
127.0.0.1   mgmt.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   mgmt.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   crs.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   crs.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mirror.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   mirror.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   sql.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   sql.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   cvs.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   cvs.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   git.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   git.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mobile.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   mobile.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   squid.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   squid.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   database.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   database.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   gw.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   gw.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   help.youtube.com
      
127.0.0.1   172.217.12.100
      
127.0.0.1   monitor.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   monitor.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ssh.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ssh.youtube.com     
      
127.0.0.1   198.105.254.63
      
127.0.0.1   db.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   db.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   help.youtube.com
      
127.0.0.1   2607:f8b0:4002:811:0:0:0:2004
      
127.0.0.1   mssql.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   mssql.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   ssl.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   ssl.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   demo.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   demo.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   helpdesk.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   helpdesk.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   mta.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   mta.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   dev.youtube.com
      
127.0.0.1   198.105.244.63
      
127.0.0.1   dev.youtube.com
      
127.0.0.1   198.105.254.63
      
127.0.0.1   home.youtube.com
      
127.0.0.1   198.105.244.63





      share|improve this answer


























        1












        1








        1







        To block sites you need to list all the domain-names, for sites like facebook and youtube that's a really big list of names and ip-addresses. I'll copy the code that I used for blocking youtube beneath.



        Subdomain   IP Address
        
127.0.0.1   host.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   host.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   216.58.192.206
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   216.58.192.238
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   172.217.0.14
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   172.217.6.14
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   172.217.9.46
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   216.58.192.174
        
127.0.0.1   172.217.6.110   
        
127.0.0.1   172.217.4.46
        
127.0.0.1   172.217.1.46    
        
127.0.0.1   172.217.8.174
        
127.0.0.1   172.217.8.206
        
127.0.0.1   216.58.192.142
        
127.0.0.1   216.58.216.78
        
127.0.0.1   172.217.4.78
        
127.0.0.1   216.58.216.238
        
127.0.0.1   74.125.126.129
        
127.0.0.1   198.105.244.63
        
127.0.0.1   198.105.254.63
        
127.0.0.1   198.105.244.63
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
        
127.0.0.1   admin.youtube.com   
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
        
127.0.0.1   http.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   http.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx0.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mx0.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   administration.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   administration.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   development.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   development.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   svn.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   svn.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   id.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   id.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx1.youtube.com 
        
127.0.0.1   198.105.244.63  
        
127.0.0.1   mx1.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ads.youtube.com 
        
127.0.0.1   172.217.8.174
        
127.0.0.1   devsql.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   devsql.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   syslog.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   syslog.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ads.youtube.com 
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
        
127.0.0.1   adserver.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   adserver.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   images.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   images.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mysql.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mysql.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   devtest.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   devtest.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   info.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   info.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.9.46
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.174
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.6.110
        
127.0.0.1   news.youtube.com
        
127.0.0.1   172.217.4.46
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.1.46
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.8.174
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.8.206
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.142
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.216.78
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.4.78
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.216.238
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.206
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.238
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.0.14
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.6.14
        
127.0.0.1   alerts.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   alerts.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dhcp.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dhcp.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   test1.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   test1.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
        
127.0.0.1   internal.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   internal.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   noc.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   noc.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   alpha.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   alpha.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   direct.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   direct.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   test2.youtube.com   
        
127.0.0.1   198.105.244.63  
        
127.0.0.1   test2.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   internet.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   internet.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ap.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ap.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dmz.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dmz.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   testing.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   testing.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   intra.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   intra.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns0.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns0.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   apache.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   apache.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   upload.youtube.com  
        
127.0.0.1   172.217.8.175
        
127.0.0.1   upload.youtube.com
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200f
        
127.0.0.1   intranet.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   intranet.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns1.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns1.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   app.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   app.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns0.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns0.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   vm.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   vm.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ipv6.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ipv6.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns2.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns2.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   apps.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   apps.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns1.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns1.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   vnc.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   vnc.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   lab.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   lab.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns3.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns3.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   appserver.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   appserver.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns2.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns2.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ldap.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ldap.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   aptest.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   aptest.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   download.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   download.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   vpn.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   vpn.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   linux.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   linux.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ops.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ops.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   auth.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   auth.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   en.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   en.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   web.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   web.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   local.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   local.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   oracle.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   oracle.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   backup.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   backup.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   erp.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   erp.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   web2test.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   web2test.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   log.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   log.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   owa.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   owa.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   beta.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   beta.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   eshop.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   eshop.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   whois.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   whois.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   pbx.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   pbx.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   blog.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   blog.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   exchange.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   exchange.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   wiki.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   wiki.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.8.174
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.8.206
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.142
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.216.78
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.4.78
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.216.238
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.206
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.238
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.0.14
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.6.14
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.9.46
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.174
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.6.110
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.4.46
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.1.46
        
127.0.0.1   s3.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   s3.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   f5.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   f5.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   www.youtube.com
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
        
127.0.0.1   secure.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   secure.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   chat.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   chat.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   fileserver.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   fileserver.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   www2.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   www2.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   server.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   server.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   citrix.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   citrix.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   firewall.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   firewall.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   xml.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   xml.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   main.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   main.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   shop.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   shop.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   cms.youtube.com
        
127.0.0.1   172.217.8.174
        
127.0.0.1   forum.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   forum.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   cms.youtube.com
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
        
127.0.0.1   manage.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   manage.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   sip.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   sip.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   corp.youtube.com
        
127.0.0.1   74.125.126.129
        
127.0.0.1   corp.youtube.com
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
        
127.0.0.1   mgmt.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mgmt.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   crs.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   crs.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mirror.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mirror.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   sql.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   sql.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   cvs.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   cvs.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   git.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   git.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mobile.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mobile.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   squid.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   squid.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   database.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   database.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   gw.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   gw.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   help.youtube.com
        
127.0.0.1   172.217.12.100
        
127.0.0.1   monitor.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   monitor.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ssh.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ssh.youtube.com     
        
127.0.0.1   198.105.254.63
        
127.0.0.1   db.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   db.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   help.youtube.com
        
127.0.0.1   2607:f8b0:4002:811:0:0:0:2004
        
127.0.0.1   mssql.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mssql.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ssl.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ssl.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   demo.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   demo.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   helpdesk.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   helpdesk.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mta.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mta.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dev.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dev.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   home.youtube.com
        
127.0.0.1   198.105.244.63





        share|improve this answer













        To block sites you need to list all the domain-names, for sites like facebook and youtube that's a really big list of names and ip-addresses. I'll copy the code that I used for blocking youtube beneath.



        Subdomain   IP Address
        
127.0.0.1   host.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   host.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   216.58.192.206
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   216.58.192.238
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   172.217.0.14
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   172.217.6.14
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   172.217.9.46
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   216.58.192.174
        
127.0.0.1   172.217.6.110   
        
127.0.0.1   172.217.4.46
        
127.0.0.1   172.217.1.46    
        
127.0.0.1   172.217.8.174
        
127.0.0.1   172.217.8.206
        
127.0.0.1   216.58.192.142
        
127.0.0.1   216.58.216.78
        
127.0.0.1   172.217.4.78
        
127.0.0.1   216.58.216.238
        
127.0.0.1   74.125.126.129
        
127.0.0.1   198.105.244.63
        
127.0.0.1   198.105.254.63
        
127.0.0.1   198.105.244.63
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx.youtube.com  
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
        
127.0.0.1   admin.youtube.com   
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
        
127.0.0.1   http.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   http.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx0.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mx0.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   administration.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   administration.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   development.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   development.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   svn.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   svn.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   id.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   id.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mx1.youtube.com 
        
127.0.0.1   198.105.244.63  
        
127.0.0.1   mx1.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ads.youtube.com 
        
127.0.0.1   172.217.8.174
        
127.0.0.1   devsql.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   devsql.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   syslog.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   syslog.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ads.youtube.com 
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
        
127.0.0.1   adserver.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   adserver.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   images.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   images.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mysql.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mysql.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   devtest.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   devtest.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   info.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   info.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.9.46
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.174
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.6.110
        
127.0.0.1   news.youtube.com
        
127.0.0.1   172.217.4.46
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.1.46
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.8.174
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.8.206
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.142
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.216.78
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.4.78
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.216.238
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.206
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   216.58.192.238
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.0.14
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   172.217.6.14
        
127.0.0.1   alerts.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   alerts.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dhcp.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dhcp.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   test1.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   test1.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   news.youtube.com    
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
        
127.0.0.1   internal.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   internal.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   noc.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   noc.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   alpha.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   alpha.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   direct.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   direct.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   test2.youtube.com   
        
127.0.0.1   198.105.244.63  
        
127.0.0.1   test2.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   internet.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   internet.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ap.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ap.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dmz.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dmz.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   testing.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   testing.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   intra.youtube.com   
        
127.0.0.1   198.105.244.63
        
127.0.0.1   intra.youtube.com   
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns0.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns0.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   apache.youtube.com  
        
127.0.0.1   198.105.244.63
        
127.0.0.1   apache.youtube.com  
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns.youtube.com 
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns.youtube.com 
        
127.0.0.1   198.105.254.63
        
127.0.0.1   upload.youtube.com  
        
127.0.0.1   172.217.8.175
        
127.0.0.1   upload.youtube.com
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200f
        
127.0.0.1   intranet.youtube.com    
        
127.0.0.1   198.105.244.63
        
127.0.0.1   intranet.youtube.com    
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns1.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns1.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   app.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   app.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns0.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns0.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   vm.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   vm.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ipv6.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ipv6.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns2.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns2.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   apps.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   apps.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns1.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns1.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   vnc.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   vnc.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   lab.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   lab.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ns3.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ns3.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   appserver.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   appserver.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dns2.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dns2.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ldap.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ldap.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   aptest.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   aptest.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   download.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   download.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   vpn.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   vpn.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   linux.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   linux.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ops.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ops.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   auth.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   auth.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   en.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   en.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   web.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   web.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   local.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   local.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   oracle.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   oracle.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   backup.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   backup.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   erp.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   erp.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   web2test.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   web2test.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   log.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   log.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   owa.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   owa.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   beta.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   beta.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   eshop.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   eshop.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   whois.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   whois.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   pbx.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   pbx.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   blog.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   blog.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   exchange.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   exchange.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   wiki.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   wiki.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.8.174
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.8.206
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.142
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.216.78
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.4.78
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.216.238
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.206
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.238
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.0.14
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.6.14
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.9.46
        
127.0.0.1   www.youtube.com
        
127.0.0.1   216.58.192.174
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.6.110
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.4.46
        
127.0.0.1   www.youtube.com
        
127.0.0.1   172.217.1.46
        
127.0.0.1   s3.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   s3.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   f5.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   f5.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   www.youtube.com
        
127.0.0.1   2607:f8b0:4009:803:0:0:0:200e
        
127.0.0.1   secure.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   secure.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   chat.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   chat.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   fileserver.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   fileserver.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   www2.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   www2.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   server.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   server.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   citrix.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   citrix.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   firewall.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   firewall.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   xml.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   xml.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   main.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   main.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   shop.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   shop.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   cms.youtube.com
        
127.0.0.1   172.217.8.174
        
127.0.0.1   forum.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   forum.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   cms.youtube.com
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:66
        
127.0.0.1   manage.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   manage.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   sip.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   sip.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   corp.youtube.com
        
127.0.0.1   74.125.126.129
        
127.0.0.1   corp.youtube.com
        
127.0.0.1   2607:f8b0:4001:c1d:0:0:0:81
        
127.0.0.1   mgmt.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mgmt.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   crs.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   crs.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mirror.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mirror.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   sql.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   sql.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   cvs.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   cvs.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   git.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   git.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mobile.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mobile.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   squid.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   squid.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   database.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   database.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   gw.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   gw.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   help.youtube.com
        
127.0.0.1   172.217.12.100
        
127.0.0.1   monitor.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   monitor.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ssh.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ssh.youtube.com     
        
127.0.0.1   198.105.254.63
        
127.0.0.1   db.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   db.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   help.youtube.com
        
127.0.0.1   2607:f8b0:4002:811:0:0:0:2004
        
127.0.0.1   mssql.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mssql.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   ssl.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   ssl.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   demo.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   demo.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   helpdesk.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   helpdesk.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   mta.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   mta.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   dev.youtube.com
        
127.0.0.1   198.105.244.63
        
127.0.0.1   dev.youtube.com
        
127.0.0.1   198.105.254.63
        
127.0.0.1   home.youtube.com
        
127.0.0.1   198.105.244.63






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            Are they similar matrix

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            0 $begingroup$ Do $begin{bmatrix} 0&i&0\0&0&1\0&0&0 end{bmatrix} $ and $begin{bmatrix} 0&0&0\-i&0&0\0&1&0 end{bmatrix} $ are similar.Is this True/false Clearly both are nilpotent and one is conjucate transpose of other but how to know if they are similar.i'm stuck. Please help me linear-algebra vector-spaces eigenvalues-eigenvectors generalizedeigenvector share | cite | improve this question edited Dec 10 '18 at 6:38 Vasanth Kris asked Dec 10 '18 at 6:19 ...
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